CN104051803B - Accumulator list pool unit and the method being used for monitoring accumulator list pond - Google Patents
Accumulator list pool unit and the method being used for monitoring accumulator list pond Download PDFInfo
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- CN104051803B CN104051803B CN201410096251.4A CN201410096251A CN104051803B CN 104051803 B CN104051803 B CN 104051803B CN 201410096251 A CN201410096251 A CN 201410096251A CN 104051803 B CN104051803 B CN 104051803B
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- 238000010586 diagram Methods 0.000 description 14
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 11
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
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- 206010037660 Pyrexia Diseases 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
-
- H02J7/0026—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The present invention describes one to be had accumulator list pond (21) and is used for monitoring the monitoring of the functional status in accumulator list pond (21) and accumulator list pool unit (221) of control unit (230).Forming the coupling unit of two half-bridges (240,250) of full-bridge in being provided with arranging in accumulator list pool unit, half-bridge includes the positive pole (222) with accumulator list pond (21) the first power semiconductor (241,251) coupled and the second power semiconductor (242,252) that the negative pole (223) in accumulator list pond (21) couples and middle connection end respectively and is connected via the corresponding middle end another outfan lead-out terminal corresponding with accumulator list pool unit (221) (224,225) that connects.Accumulator list pool unit (21) is arranged to the most so run the power semiconductor of half-bridge, so that the accumulator unit voltage in accumulator list pond (21) applies the lead-out terminal (224,225) to accumulator list pool unit (221) with positive or negative direction alternatively.
Description
Technical field
The present embodiment relates to having accumulator list pond and the accumulator list pool unit of monitoring and control unit for monitoring the functional status in described accumulator list pond.A kind of method that the invention still further relates to functional status for monitoring the accumulator list pond arranged in accumulator list pool unit by means of the monitoring arranged in described accumulator list pool unit and control unit.Additionally, the present invention relates to a kind of battery system, it accumulator including there is at least one accumulator battery and battery management system, described accumulator battery is provided with multiple accumulator list pool unit according to the present invention.
Background technology
Generally, the accumulator being applied in hybrid power and electric vehicle is referred to as traction battery, because these accumulator are for the power supply of electrically driven.Figure 1 illustrates the basic circuit diagram of the battery system with such traction battery 20.Accumulator 20 includes multiple accumulator list pond 21.In order to diagram only two the accumulator list ponds simplified in FIG are provided with reference 21.
Accumulator 20 is made up of two accumulator list pond series circuits 22,23, and they include multiple accumulator list pond 21 being connected in series respectively.These accumulator list pond series circuits 22,23 or single pond module connect with accumulator terminal 24,25 with the charging connection end of plug 30 respectively.
Positive accumulator terminal 24 can be connected with accumulator 20 via separation and charging device 40, and this separation and charging device include separating switch 41, and it is connected in parallel with the series circuit being made up of charge switch 42 and charging resistor 43.Negative accumulator terminal 25 is attachable via segregation apparatus 50 with accumulator 20, and this segregation apparatus includes another separating switch 51.
In addition Fig. 2 shows 60, schematically illustrates the most very much different fault mechanisms 61 and the consequence 62 thereof of lithium-ions battery.Fault mechanism 61 shown in this can result in the thermal breakdowns (Thermal Runaway) 64 caused by unallowed temperature rising 63 in accumulator list pond.Based on gas 65 can discharge this discharge in the case of there is thermal breakdown 64 such as can exist as the intrinsic pressure result in accumulator list pond improved in the case of opening the safety-valve and cause what the fire 66 in accumulator list pond or arrange in extreme circumstances caused accumulator list pond 21 to rupture 67.Therefore in the case of the application in traction battery of the accumulator list pond 21, the existence of thermal breakdown 64 must be got rid of with the maximum probability close to 1.
Thermal breakdown 64 can accumulator list pond when overcharging as the accumulator list pond during back to back charging process deep discharge result or there is the unallowed high charge in accumulator list pond and discharge current, they can exist in the case of such as producing for external short circuit 90.In addition thermal breakdown 64 can exist in the case of there is accumulator list pond internal short-circuit 100, this short circuit can such as produce as the result of the great mechanical force during accident 101 or the result as the internal tree-shaped formation of brilliant 102 in accumulator list pond, and this tree-shaped crystalline substance produces in the case of can there is high charge current the most at low temperatures.In addition thermal breakdown 64 can be used as the result existence of accumulator list pond internal short-circuit, and this internal short-circuit can be polluted by the accumulator list pond produced during fabrication, be caused especially by metallic foreign body granule 103 present in accumulator list pond.And thermal breakdown 64 can exist accumulator list pond unallowed heating its such as can as vehicle fire result produce in the case of or in the case of the overload that there is accumulator list pond 120 exist.
Figure 3 illustrates by the basic circuit diagram of battery system 10 known in the art, this battery system includes traction battery 20 and the battery management system (BMS) with multiple accumulator list pond 21.The electronic installation of battery management system 11 has Distributing Frame, wherein the monitoring and the control unit 130 that are made up of the monitoring electronic installation (CSC electronic installation) in accumulator list pond 21 being designed as satellite, they set the functional status for monitoring one or more accumulator list pond 21 respectively and communicate with central authorities' accumulator control device (BCU) 140 via internal bus system 141.
The monitoring electronic installation of the electronic installation of battery management system 11, especially accumulator list pond 21 is needs, in order to protecting the accumulator list pond 21 of critical state shown in figure 2, this can result in thermal breakdown.In the electronic installation of battery management system 11, run height consume; so that on the one hand protection accumulator list pond 21 avoids due to external cause such as due to the overload of the short circuit in the inverter of electronic driver, on the other hand avoid the fault of the electronic installation due to battery management system, such as owing to accumulator unit voltage passes through the detection harm accumulator list pond 21 of the mistake of monitoring and control unit 130.
As in the battery system that figure 1 illustrates, in the battery system that figure 3 illustrates, traction battery is via separating and charging device 40 is attachable with positive accumulator terminal 24 and is attachable via segregation apparatus 50 with negative accumulator terminal 25.At this in order to represent that same or analogous component uses identical reference respectively for the battery system illustrated in figures 1 and 3.
In addition it is designed as the accumulator control device 140 of central authorities controlling to separate the separating switch (relay) 41 with charging device 40 and charge switch (relay) 42.Separating switch 41 and charge switch 42 represent with arrow 142 in the drawings by means of the control of accumulator control device 140.And central authorities' accumulator control device 140 is designed as controlling another separating switch (relay) 51 of segregation apparatus 50.Control by means of accumulator control device 140 separating switch 51 represents with arrow 143.
The accumulator control device 140 of central authorities is connected via other accumulator terminal 24,25 of high volt wire 144,145 and each.In addition the accumulator control device 140 of central authorities includes current sensor 150,160, and they are arranged for measuring the electric current flowing through traction battery 20.Accumulator control device 140 also communicates with vehicle interface (vehicle interface) via CAN 146.There is provided the information of the functional status about vehicle can to accumulator control device 140 via CAN.
In application is by the battery management system 11 of battery system known in the art, therefore make every effort to so improve the safety of battery system 10 so that there is not irrational danger.According to standard ISO26262, the functional safety of battery management system 11 is proposed high request at this, because the fault of the electronic installation illustrated can result in danger.Safety test is defined further for lithium-ions battery list pond.In order to allow to transport accumulator list pond, it is necessary to implement such as UN transport test.Measurement result must be estimated according to EUCAR harmful grade or danger classes (EUCAR hazard level).Accumulator list pond must comply with predetermined minimum safe grade at this.In order to reach this point, in the accumulator list pond of traction battery, take multiple addition thereto setting.
If the safety in accumulator list pond 21 can not be significantly improved, then predictably set up the classification according to danger classes ASIL C for being used for there is the battery management system for electric motor car and the battery system of the traction battery 20 of plug-in hybrid power (Plug-in hybrid power).Such addition thereto is thus taked, and will be integrated in accumulator list pond by so-called safety device (Safety Devices).Therefore typically it is integrated with, in accumulator list pond, the safety device being described below.
Integrated in accumulator list pond overcharge safety device (OSD).Such safety device that overcharges makes accumulator list pond less than EUCAR danger classes 4 during overcharging.The allowed band of accumulator unit voltage terminates at 4.2V.During overcharging, accumulator list pond is since that the accumulator unit voltage of an about 5V is formed is the highest intrinsic pressure, and it is bent outwardly and overcharges the diaphragm of safety device and by this accumulator list pond electricity ground short circuit.As its result so by accumulator list tank discharge, until the safety device activated in accumulator list pond.The short circuit in the accumulator list pond between two poles in accumulator list pond maintains by overcharging safety device.
In addition accumulator list pond safety device (Cell Fuse) is integrated in accumulator list pond.Should Fuse Type safety device integrated in accumulator list pond be very effective protection instrument in the aspect of accumulator list pond, but cause great problem when accumulator list pond is installed in the series circuit of battery module or in battery system.These measures are disadvantageous on the contrary there.
Also puncture safety device (NDS) it is integrated with in accumulator list pond.This puncture safety device protection accumulator list pond; its method is to produce the short circuit paths so limited when nail or sharp article being penetrated in accumulator list pond; it is not result in the extreme local pyrexia in accumulator list pond in the region that stator enters, and this heating can result in the local melting of the separator of existence.
Also functional safety layer (SFL) it is integrated with in accumulator list pond.This functional safety layer is by the ceramic coating of one of two electrodes in accumulator list pond, preferably by the ceramic coating realization of anode.The plane short circuit in accumulator list pond can be stoped when separator melts by means of functional safety layer and then stop the electric energy in accumulator list pond to be converted into loss heat the most rapidly.
The most also collision safety device (Crush Safety Device) it is integrated with in accumulator list pond.Collision safety device has the functional mode similar with puncturing safety device.Thering is provided the short circuit paths limited in accumulator list pond in the case of the extreme mechanically deform of accumulator list pond housing, this short circuit paths stops the heating of the local of the extreme in accumulator list pond and thus improves the safety in accumulator list pond.
In accumulator list pond in being currently at research and development, the measure for electrical safety relates to great cost in particular, and these measures such as protect against overcharging or guarantee to filter protection.Furthermore these measures are disadvantageous rather than significant after accumulator list pond is installed in battery module or battery system the most on the contrary.Such as can produce such situation when the activation of the Fuse Type safety device in accumulator list pond, the electronic installation of the battery management system (BMS) i.e. existed stands the highest negative voltage.In battery system aspect, thus produce additional cost, because must being fulfilled for the transport regulations for accumulator list pond layer, without thus relating to other utilization.
Summary of the invention
According to the invention provides a kind of accumulator list pool unit with accumulator list pond and monitoring and control unit for monitoring the functional status in described accumulator list pond.Wherein, being provided with the coupling unit with two half-bridges in described accumulator list pool unit, described half-bridge includes being connected end with the first power semiconductor of the positive pole in described accumulator list pond coupling with the second power semiconductor of the negative couplings in described accumulator list pond and centre respectively.Described half-bridge is connected with another lead-out terminal corresponding of described accumulator list pool unit via the corresponding middle end that connects.In addition, described accumulator list pool unit be arranged to described coupling unit properly functioning under so run by means of the control of described monitoring and control unit, to connect described first power semiconductor of half-bridge and described second power semiconductor of another half-bridge described and to disconnect another power semiconductor of described difference of described half-bridge, so that the accumulator unit voltage in described accumulator list pond applies the described lead-out terminal to described accumulator list pool unit with positive or negative direction alternatively.
According to present invention also offers a kind of method for monitoring, by means of the monitoring arranged in accumulator list pool device and control unit, the accumulator list pond arranged in described accumulator list pool device.Wherein, described accumulator list pond drives by means of the coupling unit arranged in described accumulator list pool unit, and described coupling unit includes two half-bridges that form full-bridge, that be made up of power semiconductor.If determined error situations or the danger situation in properly functioning devious described accumulator list pond with described accumulator list pond by described monitoring and control unit, the most described accumulator list pond by means of the control of described coupling unit and/or is arranged at safe state with the described pole in described accumulator list pond couples for the discharge circuit in accumulator list pond described in repid discharge.
According to present invention also offers a kind of battery system, it includes having at least one accumulator battery, is provided with multiple accumulator list pool unit according to the present invention at least one accumulator battery described.Additionally, described battery system includes battery management system, wherein, described battery management system is configured to the described monitoring with described accumulator list pool unit and control unit communication.
Dependent claims shows currently preferred improvement.
Clearly saying, provide a kind of accumulator list pool unit according to the present invention, it includes integrated monitoring and control unit and have can the accumulator list pond of output voltage of change poles.It is based especially in accumulator list pool unit the coupling unit with four power semiconductors arranged and achieves by the autotelic control offer of power semiconductor a series of adjustable for protecting the security function in accumulator list pond.Security function on purpose can be applied based on by the monitoring of monitoring and control unit accumulator list pond.About the output voltage provided on the lead-out terminal of battery module by accumulator list pond change poles, thus accumulator unit voltage can be exported along positive direction or negative direction according to the accumulator list pool unit of the present invention in properly functioning.
Function based on the accumulator list pond according to the present invention, i.e. change poles accumulator unit voltage, especially it is useful according to the accumulator list pond of the present invention in the three-phase battery system with the adjustable output voltage of substep, these three-phase battery systems are referred to as accumulator direct-flow inverter, or apply in general in the heterogeneous battery system with the adjustable output voltage of substep.
Preferably, monitoring and control unit according to the present invention are also configured to, in order to regulate the properly functioning of accumulator list pond, on the lead-out terminal in accumulator list pond, wherein there is not voltage, so control the power semiconductor of coupling unit so that connect half-bridge or the first or second power semiconductor.In other words, it also is able to selectively export 0V voltage to its lead-out terminal according to the accumulator list pond of the present invention.Preferably, other two power semiconductors are disconnected at this, say, that such as two the second power semiconductors of disconnection in the case of connecting the first power semiconductor, and in contrast.
In a preferred implementing form of the present invention, monitoring and control unit according to the present invention are designed as, when its value of existence exceedes accumulator unit voltage or the accumulator unit voltage of voltage limit above, and/or when there is accumulator unit voltage or the accumulator unit voltage that its value is less than following voltage limit, so control the power semiconductor of coupling unit, so as the functional status in regulation accumulator list pond, do not have electric current can flow through described accumulator list pond under described functional status, make connect the first or second power semiconductor of half-bridge and disconnect the second or first power semiconductor of half-bridge.
This has the advantage that; monitoring and the accumulator list pond that works under normal operation according to the upper limits value identification exceeding accumulator unit voltage or accumulator unit voltage of control unit have overcharging of threat, and be then able to the most no longer charge to accumulator list pond and the most such as protect accumulator list pond to avoid overcharging in the case of battery charging plant fault safely.
In addition, monitoring and control unit are according to less than the deep discharge having threat based on the accumulator list pond worked under normal operation of the limits value identification below accumulator unit voltage or accumulator unit voltage, wherein accumulator list pond is changed into safe condition, the most no longer has electric current to flow through accumulator list pond.May flow through, in the accumulator list pond according to the present invention, the power semiconductor or semiconductor switch only existed by the whole outside exportable electric current of battery system including the accumulator list pond according to the present invention.
In another preferred implementing form of the present invention, monitoring and control unit according to the present invention set and are used for, when there is the charging current that its value exceedes charging current limit that is predetermined or that be appropriately selected, and/or when there is the discharge current that its value exceedes discharge current limits value that is predetermined or that be appropriately selected, so control the described power semiconductor of described coupling unit to regulate the functional status in described accumulator list pond, no longer there is electric current can flow through described accumulator list pond under described functional status, make connect the first or second power semiconductor of described half-bridge and disconnect the second or first power semiconductor of described half-bridge.
Therefore monitoring and control unit recognize the overload having threat due to too high discharge current based on the accumulator list pond in properly functioning middle work, and these too high discharge currents such as can exist as the result of the external short circuit due to the trouble accumulator in inverter.At this, accumulator list pond is changed into safe condition, does not has electric current to flow through accumulator list pond in this condition.Therefore protection accumulator list pond avoids having the load not allowing high discharge current.
In addition, described monitoring and control unit recognize the overload having threat due to too high charging current based on the accumulator list pond in properly functioning middle work, the most subsequently accumulator list pond is changed into safe condition, the most no longer has electric current to flow through accumulator list pond.Therefore protection accumulator list pond avoids having the load not allowing high charging current.This is such as especially advantageous in the case of there is low-down temperature, and wherein each accumulator list pond is particularly sensitive about lithium coating constructible on anode.
In an especially advantageous form of implementation of the present invention, monitoring and control unit according to the present invention are configured to, according to the existence analyzing hazard recognition situation of the information communicated especially by battery management system, accumulator list pond can be damaged under this dangerous situation.In addition, monitoring and control unit according to the present invention can be configured to, so control when dangerous situation in two half-bridges of coupling unit at least one, make connect the first or second power semiconductor of a half-bridge and the second or first power semiconductor of identical half-bridge is activated in operation as controllable resistance performance so-called, thus by accumulator list tank discharge.The first of another half-bridge and/or the second power semiconductor can be disconnected for this.Being furthermore possible in order to the electric discharge in accumulator list pond is respectively turned on two first or the second power semiconductor of each half-bridge, the most correspondingly the second or first power semiconductor of two half-bridges works in activating operation.
In other words, wherein can such as be apprised of the corresponding information about this according to the monitoring in accumulator list pond of essential safety of the present invention and the electronic installation of control unit by battery management system, i.e. have about the automobile being wherein provided with the battery system according to the present invention information of accident via one of two half-bridges or in parallel via two half-bridges by accumulator list tank discharge.During discharging via one of two half-bridges in accumulator list pond, accumulator list pond is not over its lead-out terminal output voltage, but discharges the most lentamente.At this, the power semiconductor run especially as controlled resistance includes that its thermally coupled and cooling are designed as requested.
According to the present invention electricity essential safety accumulator list pool unit in arrange secondary battery unit by that be associated with this secondary battery unit and be arranged on the coupling unit in described accumulator list pool unit and monitor and control unit implement the most safely, make, compared to the battery management system coming from battery system the most known in the art, the most substantially to propose less requirement to battery management system according to the battery system of the present invention.Furthermore it is possible to save multiple the most typically implement however measure that not purpose guides, for example, secondary battery unit arranges integrated overcharge safety device and/or integrated accumulator list pond safety device.
In another especially advantageous form of implementation of the present invention, monitoring and control unit are provided for, according to the single pond temperature measured or the analysis of accumulator list pond temperature, especially when exceeding single pond temperature or the accumulator list pond temperature of predetermined temperature limits value and/or according to accumulator unit voltage or the analysis of accumulator unit voltage, especially when the voltage dip of accumulator unit voltage or accumulator unit voltage time hazard recognition situation existence.
In another especially preferred form of implementation of the present invention, additionally, accumulator list pond is provided with the discharge circuit that the pole with described accumulator list pond couples, the discharge circuit especially with the series circuit being made up of power semiconductor and resistance.At this, accumulator list pool unit can be provided for, described discharge circuit is so controlled when dangerous situation, making it possible to realize accumulator list pond by means of the electric discharge of discharge circuit, especially accumulator list pond with the electric discharge of a discharge current flowing through discharge circuit, described discharge current is equal to a predetermined part for the short circuit current in described accumulator list pond.Have an advantage in that, will not be based on the attainable discharge current of thermal losses Power Limitation at this, this thermal losses power produces in the power semiconductor run as controllable resistance or power semiconductor can be imposed in continuous service.
Therefore, if being informed that the monitoring in accumulator list pond of essential safety according to the present invention and the electronic installation of control unit are provided with the vehicle of the battery system according to the present invention and have accident by battery management system, then can it is hereinafter also referred to as supper-fast discharge circuit (UFDD) as quickly as possible by accumulator list tank discharge by discharge circuit.In order to support discharge current, accumulator list pond also is able to be discharged by one or two half-bridge.
According to an aspect can based on according to the identification of dangerous situation of the present invention the most reliably identifies test process test during this test process the enforcement in accumulator list pond or other accumulator list pond is similar in the case of.
If such as standing to puncture test (Nail Penetration Test) or crash tests (Crush Test) in the scope of UN transport test according to the accumulator list pond of the present invention, recognized accumulator list tank discharge by electric current by the analysis of accumulator unit voltage or accumulator unit voltage, without running this accumulator list pond according to the monitoring of the present invention and the electronic installation of control unit.The identification of this process can such as be realized by the voltage dip of accumulator unit voltage or accumulator unit voltage.Trigger via according to the electric discharge to this accumulator list pond of the discharge circuit of the present invention at once as its result, and the most substantially via discharge circuit to this accumulator list tank discharge.Selectively it also is able to be realized by two half-bridges as has been stated the support of the electric discharge in accumulator list pond at this.
If standing strong heating according to the accumulator list pond of the present invention, then can be by the monitoring of the foundation present invention and the electronic installation identification this point of control unit.Trigger at once such as via according to the electric discharge to this accumulator list pond of the discharge circuit of the present invention as its result, and via discharge circuit in time by accumulator list tank discharge.
Generally speaking, the coupling unit arranged and monitoring can be combined in accumulator list pond according to the accumulator list pond of the essential safety of the electricity of the present invention and control unit designs the most safely so that in the battery management system according to the present invention, battery management system must be proposed less requirement compared to by battery system known in the art.In addition can consider multiple current enforcement however the non-obvious measure of purpose, be provided with such as to accumulator list pond or accumulator list pond and integrated overcharge safety device and/or integrated accumulator list pond safety device.
It is furthermore possible to consider or the most particularly simple realize the measure of routine, it is for improving safety in the case of there is strong mechanical force, as being provided with integrated puncturing safety device and/or be provided with integrated collision safety device to accumulator list pond, because the requirement in the accumulator Dan Chi side according to the present invention is less.Achieving at this, strong mechanical force can act on accumulator list pond as its such as emulation in UN transport test non-dangerously.This is especially directed to by means of puncturing the test object with spine to the puncture in accumulator list pond and/or by means of colliding the accumulator list pond about all three spatial axes or the strong deformation in each accumulator list pond.Unallowed running status can be automatically protected itself against, in the security function of the electronic installation that the most should not be assigned to battery management system at this by means of monitoring and control unit according to the accumulator list pond of the present invention.
Therefore, it is available by a kind of basic combination of the accumulator list pool unit of the electric essential safety according to the present invention, can be made up of this basic combination especially at electronic and the safety in motor vehicle driven by mixed power battery system, its safety is especially more than by the safety in battery system known in the art.
Accompanying drawing explanation
The present invention will describe embodiments of the invention in detail with reference to appended accompanying drawing.Wherein:
Fig. 1 shows by the schematic diagram of the battery system with traction accumulator known in the art；
Fig. 2 shows the diagram of the error mechanism by prior art lithium-ions battery always, and this error mechanism can cause the thermal breakdown in this lithium-ions battery list pond；
Fig. 3 shows by the schematic diagram of the battery system with the traction accumulator by multiple accumulator list ponds structure and battery management system known in the art；
Fig. 4 shows the schematic diagram of the accumulator list pool unit of the first form of implementation according to the present invention；
Fig. 5 shows the schematic diagram of the accumulator list pool unit of the second form of implementation according to the present invention；And
Fig. 6 shows the schematic diagram of the accumulator direct-flow inverter with three accumulator batteries, is connected in series multiple accumulator list pool unit according to the present invention in these three accumulator batteries respectively.
Detailed description of the invention
Figure 4 illustrates the schematic diagram of the accumulator list pool unit 221 of the first form of implementation according to the present invention.This accumulator list pool unit 221 includes accumulator list pond 21 and coupling unit according to first form of implementation of the present invention, and this coupling unit is constructed with second half-bridge (half-bridge on the left side in Fig. 4) 250 with the first and second power semiconductors 251,252 by first half-bridge (half-bridge on the right in Fig. 4) 240 with the first and second power semiconductors 241,242.Two half-bridges 240,250 are collectively forming the full-bridge with four power semiconductors 241,242,251,252.Diode 260 being connected in parallel respectively with this power semiconductor 241,242,251,252, its conducting direction is contrary with the conducting direction of corresponding power semiconductor.In order to simplify diagram, each half-bridge is provided only with a diode and carrys out labelling with reference 160.
First half-bridge 240 is connected with first that the first power semiconductor (in Fig. 4 power semiconductor switch) above the half-bridge on right side 241 is associated the positive pole 222 in this accumulator list pond 21 at end be connected and with in second power semiconductor 242(Fig. 4 on the right side of half-bridge below power semiconductor switch) be associated second be connected the negative pole 223 in this accumulator list pond 21 at end and be connected.First half-bridge 240 is also connected end 224 with the output of accumulator list pool unit 221 at centre connection end and is connected.
Second half-bridge 250 is connected with first that the first power semiconductor (in Fig. 4 power semiconductor switch) above the half-bridge in left side 251 is associated the positive pole 222 in this accumulator list pond 21 at end be connected and with in second power semiconductor 252(Fig. 4 on the left of half-bridge below power semiconductor switch) be associated second be connected the negative pole 223 in this accumulator list pond 21 at end and be connected.Second half-bridge 250 is also connected end 224 with the output of accumulator unit voltage 225 at centre connection end and is connected.
Monitoring and the control unit 230 being connected in parallel with accumulator list pond 21 is also included, to monitor the functional status in accumulator list pond 21 according to the accumulator list pool unit 221 of the present invention.Monitoring and control unit 230 are provided with the integrated control device for four power semiconductors 241,242,251,252 according to the present invention.
In the diagram, the battery management system 211 for having multiple accumulator list pool unit 221 according to the present invention it is also shown for.This battery management system 211 be configured to monitoring and control unit 230 communicates or exchange information.Information exchange between battery management system 211 and this monitoring and control unit 20 synchronizes by means of double-head arrow 215.
The accumulator list pool unit 221 of the electric essential safety with the accumulator list pond 21 of the output voltage with change poles such as realizes by means of the device as described below that figure 4 illustrates.
Power semiconductor 241,242,251,252 so can be controlled by by means of monitoring and the control unit 230 according to the present invention so that when under properly functioning, accumulator list pond 21 should be with positive direction (+UBatteriezelle) it is transmitted in the accumulator unit voltage at lead-out terminal 224,225, the first power semiconductor 241 of the first half-bridge 240 and the second power semiconductor 252 of the second half-bridge 250 is switched on and two other power semiconductor 242,251 is disconnected.
Power semiconductor 241,242,251,252 the most so can be controlled by by means of monitoring and the control unit 230 according to the present invention so that when under properly functioning, this accumulator list pond 21 is with negative direction (-UBatteriezelle) it is transmitted in the accumulator unit voltage at lead-out terminal 224,225, the second power semiconductor 242 of the first half-bridge 240 and the first power semiconductor 251 of the second half-bridge 250 is switched on and two other power semiconductor 241,252 is disconnected.
Function quasiconductor 241,242,251,252 the most so can be controlled by by means of monitoring and the control unit 230 according to the present invention, the functional status in scalable accumulator list pond 21 alternatively when making under properly functioning in accumulator list pond 21, under this functional status, any output voltage is not transmitted in this accumulator list pond.Under this state or the first power semiconductor 241,251 of two half-bridges 240,250 is switched on and two other power semiconductor 242,252 is disconnected or the second power semiconductor 242,252 of two half-bridges 240,250 is switched on and two other power semiconductor 241,252 is disconnected.
If this monitoring and the control unit 230 properly functioning beginning from accumulator list pond 21 have overcharging of threat by means of the identification that exceedes of the above limits value of accumulator unit voltage, then by the first power semiconductor 241,251 with control unit 230 or connecting two half-bridges 240,250 by means of this monitoring and disconnect two other power semiconductor 242,252 or alternatively the second power semiconductor 242,252 of two half-bridges 240,250 of connection and disconnect two other power semiconductor 241,242.Then accumulator list pond 21 does not continues to charging and can the most such as protect against safely overcharging when there is the wrong function of battery charging plant of application.
If this monitoring and the control unit 230 properly functioning beginning from accumulator list pond 21 are by means of the deep discharge having threat less than the limits value identification below accumulator unit voltage, then by the first power semiconductor 241,251 with control unit 230 or connecting two half-bridges 240,250 by means of this monitoring and disconnect two other power semiconductor 242,252 or alternatively connect the second power semiconductor 242,252 of two half-bridges 240,250 and disconnect two other power semiconductor 241,242.Only may flow into the accumulator list pond 21 being considered as the accumulator list pool unit 221 according to the present invention at this via the power semiconductor (semiconductor switch) 241,242,251,252 of the coupling unit of this accumulator list pool unit 221 via the electric current that whole battery system is outwards transmitted.
If this monitoring and control unit 230 are from the properly functioning overload having threat beginning through too high discharge current identification accumulator list pond 21 in accumulator list pond 21, the short circuit of the outside that such as can exist as result due to the mistake in inverter, so will be by means of this monitoring and control unit 230 or connect two half-bridges 240, first power semiconductor 241 of 250, 251 and disconnect two other power semiconductor 242, 252 or alternatively connect two half-bridges 240, second power semiconductor 242 of 250, 252 and disconnect two other power semiconductor 241, 242.Then, there is no electric current in the accumulator list pond 21 flowing through reality.Therefore accumulator list pond is protected from the burden with the high discharge current being not allowed to.
If this monitoring and the control unit 230 overload having threat from the properly functioning too high charging current identification accumulator list pond 21 begun through when the lowest temperature in accumulator list pond 21, when this temperature, accumulator list pond 21 is for especially being formed in terms of lithium coating especially sensitive at anode, so will be by means of this monitoring and control unit 230 or connect two half-bridges 240, first power semiconductor 241 of 250, 251 and disconnect two other power semiconductor 242, 252 or alternatively connect two half-bridges 240, second power semiconductor 242 of 250, 252 and disconnect two other power semiconductor 241, 242.Then, there is no electric current in the accumulator list pond 21 flowing through reality.Therefore accumulator list pond is protected from the burden with the high charging current being not allowed to.
If by battery management system 211, this monitoring of the accumulator list pool unit 221 of the essential safety of the foundation present invention and control unit 230 such as notify that this vehicle has accident in vehicle, then via a half-bridge in two half-bridges 240,250 or also will be discharged via two half-bridges 240,250 concurrently in accumulator list pond 21.Such as, the second power semiconductor 242,252 of by the second power semiconductor 242,252 of the half-bridge connected with control unit 230 by means of this monitoring in two half-bridges 240,250 or also connecting two half-bridges 240,250 for this and by the first power semiconductor 241,251 of a half-bridge in two half-bridges 240,250 or also the first power semiconductor 241,251 of two half-bridges 240,250 is driven to controlled resistance in the way of the operation of so-called active.The electric discharge in accumulator list pond 21 also is able to the role exchange of first power semiconductor the 241,251 and second power semiconductor 241,251 by means of two half-bridges 240,250 and realizes in an identical manner.Accumulator list pool unit 221 does not transmit any voltage on its terminals or lead-out terminal 224,225 and discharges the most lentamente in this accumulator list pond 21.Attainable discharge current is any limitation as by heat loss power, and this heat loss power can be imposed to the power semiconductor 241,251,242,252 driven as controlled resistance when running continuously.Therefore, the power semiconductor 241,251,242,252 driven especially as controlled resistance will correspond to it and requires that ground is explained in including its thermally coupled and being cooled in.
Figure 5 illustrates the schematic diagram of the accumulator list pool unit 221 of the second form of implementation according to the present invention.This accumulator list pool unit 221 of the second form of implementation according to the present invention is with the difference of the accumulator list pool unit according to the first form of implementation that figure 4 illustrates, and additionally includes the discharge circuit 270 as supper-fast electric discharge device (supper-fast discharge equipment: UFDD) according to the accumulator list pool unit 221 of second form of implementation of the present invention.For also using identical reference according to the accompanying drawing of the identical component of the accumulator list pool unit of first and second forms of implementation of the present invention.Here, discharge circuit 270 includes being connected to series circuit between positive pole 222 and negative pole 223, that be made up of power semiconductor 271 and resistance 22 and by means of flowing through the discharge current of this discharge circuit 270 to this accumulator list pond 21 of discharging in this accumulator list pool unit 221.
If by the battery management system 211 being arranged among the battery system with multiple such accumulator list pool unit 221, this monitoring of the accumulator list pool unit 221 of the essential safety of the foundation present invention and control unit 230 notify that this vehicle being provided with the battery system according to the present invention wherein has accident, then repid discharge is carried out via this discharge circuit 270 in accumulator list pond 21.In order to support this discharge circuit 270, also discharge via two half-bridges 240,250 in accumulator list pond 21 simultaneously.In order to support this discharge circuit, two the second power semiconductors 242,252 of two half-bridges 240,250 will be connected with control unit 230 by means of this monitoring.Then accumulator list pool unit 21 does not transmit any voltage to its terminals or lead-out terminal 224,225 during discharging.This discharge circuit 270 can so design so that can discharge with the biggest discharge current of intimate short circuit current in this accumulator list pond 21.Accumulator list pond 21 it is possible to be brought into safe state very fast.It is possible in the following situation of vehicle roofing control, accumulator list pond 21 is deformed the most significantly or is thrust by the object of point in this case.
Similarly, in form of implementation shown in figure 4, it also is able to as controlled resistance, first power semiconductor 241,251 of these two half-bridges 240,250 is driven into running status actively by means of this monitoring and control unit 230 supportively.
If such as standing puncture test or shock-testing or be under comparable situation in the range of UN transmission test according to the accumulator list pond of the accumulator list pool unit 221 of the present invention, then this monitoring and control unit 230 are by identifying that to the analysis of accumulator unit voltage this accumulator list pond 21 by current discharge rather than is driven.The identification of this process can such as be realized by the voltage dip in accumulator list pond 21.This monitoring and control unit 230 trigger via the discharge circuit 270 according to the present invention the most immediately to discharge this accumulator list pond 21 and then this accumulator list pond 21 discharges essentially by this discharge circuit 270.
If being exposed under bigger intensification according to the accumulator list pond of the accumulator list pool unit 221 of the present invention, can be identified by this monitoring and control unit 230.Because the time constant of the intensification for accumulator list pond 21 is the biggest, it is possible to via the electric discharge introducing accumulator list pond 21 according to the discharge circuit 270 of the present invention before the temperature in accumulator list pond 21 exceedes marginal value in real time.Alternatively, the housing loan in accumulator list pond 21 also is able to realize via two half-bridges 240,250.In order to support discharge circuit 270, two the second power semiconductors 242,252 of especially two half-bridges 240,250 will be connected with control unit 230 by means of this monitoring.Thus the accumulator list pond 21 of the accumulator list pool unit of this foundation present invention is substantially safer compared to by accumulator list pond the most known in the art.
Accumulator list pool unit 221 according to the present invention described herein is maintained on lead-out terminal 224,225 the accumulator unit voltage applied when activating the safety measure realized by the change of the on off state in half-bridge 240,250, or this amount always remains at the maximum allowable accumulator unit voltage of light rain such as 4.2V when activating supper-fast electric discharge device (UFDD) 270.This also show the significant improvement compared to prior art of today, because the most such as will there is the highest negative voltage when activating the electric fuse within accumulator list pond, this voltage can reach in storage battery of electric motor until-400V, and this brings big problem will to the electronic installation of battery management system.
Accumulator list pool unit 221 according to the present invention described herein is not limited to lithium-ions battery list pond.This accumulator list pool unit also is able to include other battery technologies such as nickel metal hydride batteries list pond.
Shown here go out the having of essential safety of the foundation present invention accumulator list pond 221 in accumulator list pond 21 of lead-out terminal of change poles can save the safety device that overcharges (OSD) used before and accumulator list pond electric fuse (single pond electric fuse).The measure used in mechanically deform or when puncturing to improve safety such as has integrated puncture safety device and or can be removed or be the most more simply carried out.Accumulator list pool unit 221 according to the present invention described herein can build battery system, and battery management system 211 proposes to compare the requirement less by the basic mountain of battery system known in the art for this battery system.The electronic installation of this battery management system 211 can be it is thus apparent that only develop and have common quality safety measure (ASIL rank QM) and need not meet ASILC level.The safety of this battery system can be improved significantly compared to prior art of today.One example of the use of the accumulator list pool unit 221 of the essential safety of the electricity according to the present invention described herein is accumulator direct-flow inverter 210 shown in figure 6.
Functional because of the accumulator list pool unit 221 according to the present invention described herein, i.e. accumulator unit voltage is able to change poles at the terminals in accumulator list pond 21, so being adapted to again use in such accumulator direct-flow inverter 210 with the adjustable output voltage of substep according to the accumulator list pool unit 221 of the present invention.
Accumulator direct-flow inverter 210 shown in figure 6 is the battery system of the three-phase with the adjustable output voltage of substep.This accumulator direct-flow inverter 210 includes three accumulator batteries 280,290,300, and they are respectively provided with by multiple series circuits formed according to the accumulator list pool unit 221 of the present invention.This series circuit of accumulator battery 20,290,300 is connected with positive accumulator battery pole 281,291,301 with segregation apparatus 40 via charging respectively and is connected with the accumulator battery pole 282,292,302 born via segregation apparatus 50 respectively.
Wherein, those accumulator list pond or battery modules are so controlled according to the present invention so that within its operational factor is positioned at corresponding limits value, this limits value is necessary for the operation of safety.
So, lithium-ions battery list pond is typically run in a voltage range, and Umin to Umax is 2.8V to 4.2V, or preferably 3.0V to 4.2V.This is important especially for the safety of value Umin_safety or Umax_safety is effective.These data however be also applied for voltage UBatteriezelle to be measured and be in zero load, say, that when no current flows through this accumulator list pond.Wherein must unconditionally note this limits value, because otherwise this electronic installation will bear damage.
The floating voltage in accumulator list pond is substantially dependent on its charged state.Wherein, typically, it is assumed that when voltage UBatteriezelle is 2.8V, charged state SCO is 0%, when for 3.5V, charged state is 20%, when for 4.2V, charged state is 100%, and wherein, those values are relevant with negative electrode, anode and/or the type of electrolyte used and material the most respectively.
When there being electric current to flow through accumulator list pond, accumulator unit voltage UBatteriezelle has deviation with numerical data above.Assume that floating voltage is 3.5V and the internal resistance in accumulator list pond is 10m Ω when 25 DEG C.When charging current is 100A, then show that magnitude of voltage UBatteriezelle to be measured is 3.5V+1.0V=4.5V.But, the internal resistance for example, 50m Ω in this accumulator list pond when temperature is 0 DEG C, this makes to show that when such as discharge current is 50A magnitude of voltage UBatteriezelle is that 3.5V deducts 2.5V=1.0V.Due to the sensor controlling and being applied applied, this magnitude of voltage can not be reached when ambient temperature or when 0 DEG C.As a rule, in the operation in accumulator list pond the value of the Umax of this value can at 4.2V to 5.0V between and the value of Umin of this value can be at 1.5V to 4.2V between, preferably between 1.8V to 4.15V, this value however be not related to floating voltage.
Magnitude of voltage above is applicable to single accumulator list pond.For battery module, will depend upon which that how many single ponds are connected in series or in parallel.So, the module floating voltage U battery module allowed is positioned between n × 2.8V to n × 4.2V, and wherein, n represents the quantity in the accumulator list pond being connected in series each other.
Boundary value for the temperature in lithium-ions battery list pond is such as positioned at Tmin=-40 DEG C and Tmax=30 DEG C to 50 DEG C and is preferably 30 DEG C to 45 DEG C preferably 35 DEG C to 40 DEG C.For safety aspect, maximum temperature Tmax-safety should be less than at 46 DEG C to 80 DEG C, preferably 50 DEG C to 60 DEG C.Additionally, maximum external temperature Tau β en should be less than 40 DEG C, when this temperature, accumulator list pond is run.
-600A to+600A should be preferably at-1000A to+1000A, more preferably at-500A to+500A, more preferably at-450A to+450A, and more preferably outside the scope of-350A to+350A by the battery current in accumulator list pond.
The internal pressure in accumulator list pond should be preferably between 3 bars to 7 bars without departing between pressure limit 2 bar to 8 bars.
The discussion above is exemplarily used for lithium-ions battery list pond or lithium-ions battery module, and wherein, given value is especially for the lithium-ions battery list pond with the lithium mangnese oxide cobalt as the active material for negative electrode.But, the present invention is not limited to such accumulator list pond, is especially not limited to lithium-ions battery list pond.Therefore, in practice, the numerical value of operational factor to be selected depends on corresponding accumulator list pond type.
In addition to the most written disclosure, the other disclosure of the present invention will replenish the diagram shown in Fig. 1 to Fig. 6 at this.
Claims (15)
1. one kind has accumulator list pond (21) and is used for monitoring described accumulator list pond (21)
The monitoring of functional status and accumulator list pool unit (221) of control unit (230), its
Be characterised by, be provided with in described accumulator list pool unit (221) have two half-bridges (240,
250) coupling unit, said two half-bridge includes and described accumulator list pond (21) respectively
The first power semiconductor (241,251) of coupling of positive pole (222) and described accumulator
The second power semiconductor (242,252) that the negative pole (223) of single pond (21) couples and in
Between connect end, and said two half-bridge connects end and described accumulator list in the middle of corresponding
The corresponding lead-out terminal (224,225) of pool unit (221) is connected, wherein, described
Accumulator list pool unit (221) be arranged to described coupling unit properly functioning under by
In so being run by the control of described monitoring and control unit (230), to connect one
Described first power semiconductor of half-bridge and described second power semiconductor of another half-bridge are also
And another power semiconductor corresponding of disconnection said two half-bridge (240,250), thus
Make the accumulator unit voltage of described accumulator list pond (21) alternatively with positive or negative
Direction applies the described lead-out terminal (224,225) to described accumulator list pool unit (221).
Accumulator list pool unit (221) the most according to claim 1 is wherein, described
Accumulator list pool unit (221) be also configured to described properly functioning under by means of institute
The control stating monitoring and control unit (230) so controls described coupling unit, to connect
Described first power semiconductor (241,251) or described second power semiconductor (242,252),
So that no storage battery unit voltage applies the institute to described accumulator list pool unit (221)
State lead-out terminal (224,225).
Accumulator list pool unit (221) the most according to claim 1 and 2, wherein,
Described monitoring and control unit (230) are configured to monitor described accumulator list pond (21)
Accumulator unit voltage and/or flow through the electric current in described accumulator list pond, and in accumulator list pond
Less than lower electricity when the amount of voltage exceedes voltage limit and/or in the amount of accumulator unit voltage
Predetermined charging current limit is exceeded during pressure limits value and/or in the amount of charging current
Time and/or when the amount of discharge current exceedes predetermined discharge current limits value, so
Control to be used for regulating the institute of the described coupling unit of the functional status of described accumulator list pond (21)
State power semiconductor (241,242,251,252), thus connect said two half-bridge (240,
250) described first power semiconductor (241,251) and disconnect said two half-bridge (240,
250) described second power semiconductor (242,252), or connect said two half-bridge
Described second power semiconductor (242,252) of (240,250) and disconnect said two
Described first power semiconductor (241,251) of half-bridge (240,250), wherein in this merit
In energy state, no current flows through described accumulator list pond (21).
Accumulator list pool unit (221) the most according to claim 1 and 2, wherein,
Described monitoring and control unit (230) are configured to lead to by means of battery management system
Letter information and/or to measure described accumulator list pond (21) cell temperature analysis and/
Or the analysis of described accumulator unit voltage is come the existence of hazard recognition situation, and exist
Described coupling is so controlled for described accumulator list pond (21) of discharging during described danger situation
Unit so that connect corresponding at least one in said two half-bridge (240,250)
First power semiconductor (241,251) or corresponding second power semiconductor (242,252)
And another power semiconductor corresponding is driven into operation actively as controlled electricity
Resistance.
Accumulator list pool unit (221) the most according to claim 4 is wherein, described
Monitoring and control unit (230) are configured to exceed predetermined temperature limit at cell temperature
Described danger situation is identified during value processed and/or when the voltage dip of described accumulator unit voltage
Existence.
Accumulator list pool unit (221) the most according to claim 1 and 2, wherein,
Described accumulator list pool unit (221) include with described accumulator list pond (21) described just
The discharge circuit (270) that pole (222) and described negative pole (223) couple, and be constructed
For so controlling described discharge circuit (270) when dangerous situation, in order to described storage
The electric discharge in battery list pond (21) realizes by means of described discharge circuit (270).
Accumulator list pool unit (221) the most according to claim 6, wherein, with
Flow through the discharge current of described discharge circuit (270) to described accumulator list pond of discharging, wherein
Described discharge current is equal to predetermined in the short circuit current in described accumulator list pond
Point.
Accumulator list pool unit (221) the most according to claim 6 is wherein, described
Discharge circuit (270) has the string being made up of power semiconductor (271) and resistance (272)
Connection circuit.
9. one kind is used for by means of the monitoring arranged in accumulator list pool unit (221) and control
Unit processed (230) monitors the accumulator arranged in described accumulator list pool unit (221)
The method of single pond (21), it is characterised in that described accumulator list pond (21) is by means of in institute
State the coupling unit arranged in accumulator list pool unit (221) to drive, described coupling unit
Including formed full-bridge, be made up of power semiconductor (241,242,251,252) two
Half-bridge (240,250), wherein, if true by described monitoring and control unit (230)
The fixed properly functioning devious described accumulator list pond (21) with described accumulator list pond (21)
Error situations or danger situation, then by means of to the control of described coupling unit and/or with institute
State that the pole (222,223) in accumulator list pond (21) couples for electric power storage described in repid discharge
Described accumulator list pond is arranged at safe shape by the discharge circuit (270) of Chi Danchi (21)
State.
Method the most according to claim 9, wherein, by means of described monitoring and control
Unit (230) monitors accumulator unit voltage and/or the stream of described accumulator list pond (21)
Through the electric current in described accumulator list pond, and limit less than lower voltage in the amount of accumulator unit voltage
During value processed and/or when the amount of charging current exceedes predetermined charging current limit and
/ or when the amount of discharge current exceedes predetermined discharge current limits value, by single for described coupling
The described power semiconductor (241,242,251,252) of unit is arranged at no current stream wherein
Under the on off state of described accumulator list pond (21).
11. according to the method described in claim 9 or 10, wherein, by described monitoring and
Information that control unit (230) communicates by means of described battery management system and/or right
Measure accumulator list pond (21) cell temperature analysis and/or to described accumulator list pond electricity
The analysis of pressure determines the existence of danger situation.
12. methods according to claim 11, wherein, exceed in advance at cell temperature
Danger is determined during the temperature limit value determined and/or during the voltage dip of described accumulator unit voltage
The existence of dangerous situation shape.
, in 13. methods according to claim 9 wherein, when there is described danger situation
For described accumulator list pond (21) of discharging, described coupling unit is so controlled so that
At least one in said two half-bridge (240,250) is respectively turned on a power partly lead
Body and another power semiconductor corresponding is driven into running as controlled actively
Resistance.
, in 14. methods according to claim 9 wherein, when there is described danger situation
Described accumulator list pond (21) by means of described discharge circuit (270) to flow through described electric discharge
The discharge current of circuit (270) discharges, and described discharge current is equal to described accumulator list pond
(21) a predetermined part for short circuit current.
15. 1 kinds of battery systems (210), it include having at least one accumulator battery (280,
290,300) and the accumulator of battery management system (211), described at least one store
Set of cells is provided with multiple according to the accumulator list pond according to any one of claim 1 to 8
Unit (221), wherein, described battery management system (211) is configured to and described storage
The described monitoring of battery list pool unit (221) communicates with control unit (230).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013204526.3A DE102013204526A1 (en) | 2013-03-15 | 2013-03-15 | Battery cell unit with a battery cell and a monitoring and control unit for monitoring the battery cell and method for monitoring a battery cell |
| DE102013204526.3 | 2013-03-15 |
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| Publication Number | Publication Date |
|---|---|
| CN104051803A CN104051803A (en) | 2014-09-17 |
| CN104051803B true CN104051803B (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410096251.4A Expired - Fee Related CN104051803B (en) | 2013-03-15 | 2014-03-14 | Accumulator list pool unit and the method being used for monitoring accumulator list pond |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9478996B2 (en) |
| CN (1) | CN104051803B (en) |
| DE (1) | DE102013204526A1 (en) |
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| DE102018211834A1 (en) * | 2018-07-17 | 2020-01-23 | Robert Bosch Gmbh | circuitry |
| CN109164395A (en) * | 2018-08-22 | 2019-01-08 | 杭州邦利检测技术有限公司 | Power accumulator safety test method for electric vehicle |
| CN113125969B (en) * | 2020-01-14 | 2022-07-15 | 比亚迪股份有限公司 | Battery data processing method, device and medium based on AUKF |
| DE102020102561B3 (en) * | 2020-02-03 | 2021-05-06 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Motor vehicle traction battery |
| CN114062938B (en) * | 2020-07-29 | 2022-08-09 | 比亚迪股份有限公司 | Method and device for detecting oscillation heating current of power battery and vehicle |
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| DE102011113798A1 (en) * | 2010-11-02 | 2012-05-03 | Voltabatterien Gmbh | Intrinsically safe battery |
| WO2012089361A2 (en) * | 2010-12-29 | 2012-07-05 | Robert Bosch Gmbh | System comprising an electric machine |
| WO2012107126A1 (en) * | 2011-02-08 | 2012-08-16 | Robert Bosch Gmbh | Controllable energy store and method for operating a controllable energy store |
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| DE102009046501A1 (en) * | 2009-11-06 | 2011-05-12 | SB LiMotive Company Ltd., Suwon | Battery system with DC / DC converters |
| CN202009060U (en) * | 2010-07-30 | 2011-10-12 | 比亚迪股份有限公司 | Heating circuit of battery |
| CN102074752B (en) * | 2010-12-23 | 2012-07-04 | 比亚迪股份有限公司 | Heating circuit of battery |
| EP2597764B1 (en) * | 2011-11-22 | 2016-04-13 | ABB Technology AG | Method for handling failures in a modular multilevel converter and such a converter |
| DE102012013977A1 (en) * | 2012-07-16 | 2014-01-16 | Li-Tec Battery Gmbh | Housing assembly, secondary battery with at least two secondary cells and this housing assembly, and method for producing the housing assembly |
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2013
- 2013-03-15 DE DE102013204526.3A patent/DE102013204526A1/en not_active Withdrawn
-
2014
- 2014-03-14 US US14/212,973 patent/US9478996B2/en active Active
- 2014-03-14 CN CN201410096251.4A patent/CN104051803B/en not_active Expired - Fee Related
Patent Citations (3)
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| DE102011113798A1 (en) * | 2010-11-02 | 2012-05-03 | Voltabatterien Gmbh | Intrinsically safe battery |
| WO2012089361A2 (en) * | 2010-12-29 | 2012-07-05 | Robert Bosch Gmbh | System comprising an electric machine |
| WO2012107126A1 (en) * | 2011-02-08 | 2012-08-16 | Robert Bosch Gmbh | Controllable energy store and method for operating a controllable energy store |
Also Published As
| Publication number | Publication date |
|---|---|
| US9478996B2 (en) | 2016-10-25 |
| DE102013204526A1 (en) | 2014-09-18 |
| US20140266064A1 (en) | 2014-09-18 |
| CN104051803A (en) | 2014-09-17 |
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